Android-将数据发送到Winforms中托管的WCF服务

Question

I have been through the normal channels to try and solve this issue, but I can't seem to nail down how to send data correctly from my Android app to a WCF library hosted in my C# winforms app.

I have checked that the service is hosted properly using the WCFClientTest app provided by visual studio and everything is working on that end. When I call this line: androidHttpTransport.call(SOAP_ACTION, envelope); it appears to hang in the Android app

I am using ksoap2 in an attempt to call into the WCF Service, with this link as a tutorial.

Android Code

private static final String METHOD_NAME = "Alive";
    private static final String NAMESPACE = "http://tempuri.org/";
    private static final String SOAP_ACTION 
                               = "http://tempuri.org/IDeviceHealth/Alive";

    //10.0.2.2 is the ip address for the device simulator.
    private static final String URL = "http://192.168.1.8:8733/DeviceHealth/HealthService/mex"; 

    //SOAP must be  the same version as the webservice.
    private static final int SOAP_VERSION = SoapEnvelope.VER12;

public void OnClickGoBtn(View v)
    {
        try 
        {
         SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

        SoapSerializationEnvelope envelope
                                     = new SoapSerializationEnvelope(SOAP_VERSION);
        envelope.dotNet = true;
            envelope.setOutputSoapObject(request);

        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

        androidHttpTransport.call(SOAP_ACTION, envelope);
        Object result = envelope.getResponse();

        String resultData = result.toString();
        Log.d("WCF Response", resultData);          
        } 
        catch (IOException e) 
        {
          Log.d("WCF IO Error", e.toString());
        }
        catch (XmlPullParserException e) 
        {
            Log.d("XML Pull Error",e.toString());
        }
        catch(Exception e)
        {
            Log.d("General Exception", e.toString());
        }
    }

C# Server:

 <behaviors>
      <serviceBehaviors>
        <behavior name="MetadataBehavior">
          <serviceMetadata httpGetEnabled="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>

    <services>
      <service name="DeviceHealthService.DeviceHealth" behaviorConfiguration="MetadataBehavior">

        <endpoint address=""
                  binding="netTcpBinding"
                  contract="DeviceHealthService.IDeviceHealth"/>

        <endpoint address="mex"
                  binding="mexHttpBinding"
                  contract="IMetadataExchange"/>

        <host>
          <baseAddresses>
            <add baseAddress="net.tcp://localhost:10001"/>
            <add baseAddress="http://localhost:10002"/>
          </baseAddresses>
        </host>

      </service>
    </services>

public string Alive()
        {
            return "I am running";
        }

Answer 1

You should be doing this inside an AsyncTask, and not on the main thread! From your post, it looks like you're doing this from the main thread.

Everything else about your code looks normal. I typically use a timeout though, and I see you don't.

Another thing to note is that you are pointing your URL at "localhost", but your android device doesn't know what localhost is. You should point at 10.0.2.2 instead.

If it helps, here's a utility method I use in one of my Android applications that consumes a SOAP based WCF service. Please note that I always call this from within an AsyncTask, never on the main thread.

public static String invokeSoapWebservice(String method, Bundle properties, int timeout) throws IOException, XmlPullParserException {

    String action = SOAP_ACTION + method;       

    System.out.println("Calling web method " + method);

    SoapObject request = new SoapObject(NAMESPACE, method);

    //Note - ORDER MATTERS HERE
    //If the web method takes employeeId, workSiteId, jobId in that order, 
    //they have to be added to the request in that order (what bullshit!)

    if(properties.containsKey("loginId")) {
        request.addProperty("loginId", properties.getInt("loginId"));
        System.out.println("loginId = " + properties.getInt("loginId"));
    }

    if(properties.containsKey("employeeId")) {
        request.addProperty("employeeId", properties.getInt("employeeId"));
        System.out.println("employeeId = " + properties.getInt("employeeId"));
    }

    if(properties.containsKey("workSiteId")) {
        request.addProperty("workSiteId", properties.getInt("workSiteId"));
        System.out.println("workSiteId = " + properties.getInt("workSiteId"));
    }

    if(properties.containsKey("jobId")) {
        request.addProperty("jobId", properties.getInt("jobId"));
        System.out.println("jobId = " + properties.getInt("jobId"));
    }

    if(properties.containsKey("laborDetailId")) {
        request.addProperty("laborDetailId", properties.getInt("laborDetailId"));
        System.out.println("laborDetailId = " + properties.getInt("laborDetailId"));
    }

    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SOAP_VERSION);
    envelope.dotNet = true;
    envelope.setOutputSoapObject(request);

    HttpTransportSE androidHttpTransport = new HttpTransportSE(URL, timeout);       

    androidHttpTransport.call(action, envelope);
    Object result = envelope.getResponse();
    String resultData = "null response";
    if(result != null) {
        resultData = result.toString();
    }

    System.out.println("Result for web method " + method + ": " + resultData);

    return resultData;
}